CN107710572A - Linear vibration motor - Google Patents
Linear vibration motor Download PDFInfo
- Publication number
- CN107710572A CN107710572A CN201680035761.8A CN201680035761A CN107710572A CN 107710572 A CN107710572 A CN 107710572A CN 201680035761 A CN201680035761 A CN 201680035761A CN 107710572 A CN107710572 A CN 107710572A
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- China
- Prior art keywords
- magnet
- axle
- movable piece
- connection sheet
- magnet portion
- Prior art date
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
- H02K33/16—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with polarised armatures moving in alternate directions by reversal or energisation of a single coil system
Abstract
By including leading axle, stable vibration can be obtained and enjoy the advantages of impact strength is excellent, at the same time, the densification of slimming or width can be realized, furthermore, it can obtain on the basis of the volume for suppressing magnet is reduced, magnet is not easy to the movable piece of fracture with balancing weight when application is impacted.Linear vibration motor (1) includes：Movable piece (10), it includes magnet portion (4) and counterweight part (7)；Framework (2), it houses movable piece (10)；Coil (3), it is fixed on framework (2) and along a direction of principal axis driving magnet portion (4)；Elastic component (6), it applies elastic force to movable piece (10), revolts the driving force applied to magnet portion (4)；Leading axle (8), it is configured at a direction of principal axis both sides of magnet portion (4), and the vibration along a direction of principal axis to movable piece (10) guides；And connecting elements (11), it connects magnet portion (4) and counterweight part (7).
Description
Technical field
The present invention relates to a kind of linear vibration motor.
Background technology
Vibrating motor (or oscillation actuator), which is used as to be built in mobile electronic device and pass on to carrier by vibration, to be believed
Number receive or warning etc. the caused device of signal and it is widely available, be in the wearable electronic that carrier carries with
Indispensable device.In addition, vibrating motor is as the haptic technology realized in the man-machine interfaces such as touch panel, (dermal sensation is anti-
Feedback) device, attract attention in recent years.
In the exploitation of the vibrating motor of various forms, bigger vibration can be produced by the of reciprocating vibration of straight line
Linear vibration motor is paid close attention to.Above-mentioned linear vibration motor by linear fixing axle is set and make movable piece along this
When fixed shaft vibration, can obtaining vibration stably, and due to fixing axle holding movable piece can be used, therefore can obtain drop impact
Traumatic resistance.
Prior art as the linear vibration motor including fixing axle, it is thus proposed that following technical scheme etc.：
Movable piece side sets balancing weight and magnet, by applying driving force (Lip river to magnet to the coil electricity for being arranged at fixture side
Lun Zili), wherein, the through hole along direction of vibration is formed on movable piece, running through in the through hole has a fixing axle
(with reference to following patent documents 1), or, two fixing axles are set along direction of vibration, coil is configured between two fixing axles
And magnet, and be to slide freely (with reference to following patent documents 2) by movable piece supporting by two fixing axles.
Prior art literature
Patent document
Patent document 1：Japanese Patent Laid-Open 2012-16153 publications
Patent document 2：Japanese Patent Laid-Open 2011-97747 publications
The content of the invention
Invention technical problems to be solved
Along with the miniaturization of mobile electronic device and wearable electronic, slimming, to being equipped on above-mentioned mobile electricity
The vibrating motor of sub- equipment and above-mentioned wearable electronic proposes the requirement for more minimizing, being thinned.Particularly in intelligence
Energy mobile phone etc. is included in the electronic equipment in FPD portion, and space is limited in the equipment of the thickness direction orthogonal with display surface, because
This, there is the high requirement of slimming to the vibrating motor for being configured at above-mentioned space.
In the case of the slimming for the linear vibration motor for considering to include fixing axle, as the former prior art,
Formed on the movable piece for making counterweight part be formed by connecting along direction of vibration with magnet along the linear of the through hole of direction of vibration
In vibrating motor, magnet itself forms through hole, in order to ensure being enough to obtain the magnet volume of desired driving force, it is necessary to make magnetic
The thickness of body is fully thick relative to the diameter of fixing axle.Further, since it is also equipped with coil around above-mentioned magnet and forms drive
Dynamic portion, therefore exist and can not fully tackle the problem of slimming.
As the prior art of above-mentioned the latter, set two fixing axles and therebetween configuration coil and magnet it is linear
In vibrating motor, due to through hole need not be formed on magnet, therefore the slimming of magnet can be realized.However, due in magnetic
The both sides of body are provided with two fixing axles, therefore the width that can produce linear vibration motor becomes the problem of big.As in recent years
Miniaturization electronic equipment in the linear vibration motor equipped, be not only thickness direction, width also pursues more compactization.
On the other hand, it is contemplated that axle segmentation is configured at into direction of principal axis both sides of magnet, and make movable piece along configuration coaxial
On guiding shaft vibration.Or, it is contemplated that axle is split and configures and is fixed on a direction of principal axis both sides of magnet, counterweight part is surround
Each axle of segmentation is installed on, the front of each axle protruded from counterweight part is supported by the bearing of fixture side, makes above-mentioned magnetic
Body, a pair of axles and counterweight part integratedly vibrate.In this case, because axle has no through magnet, therefore can eliminate because of insertion
The volume of magnet caused by hole is reduced.
However, because axle has no through magnet, therefore, when applying impact etc., radial load is only born by movable piece,
The coupling part of magnet and balancing weight becomes to be easily broken off.In addition, being fitted around by counterweight part in the case of axle, applying
In the case of bearing radial load during impact etc., the coupling part of magnet and balancing weight, the connection of balancing weight and axle are not only
Part etc. also becomes to be easily broken off.Particularly in the case where balancing weight is the metal that tungsten alloy etc. is difficult to solder to, due to can not
The weld strength of the balancing weight and magnet or axle is improved, therefore above mentioned problem becomes more notable.In addition, bigger in order to obtain
Driving force and in the case of forming above-mentioned magnet by multiple magnet slices, due to being difficult that to improve bonding between adjacent magnet slice strong
Degree, therefore there is also the risk for producing fracture in the bonding site.
To solve the above problems as technical problem one of the present invention.That is, it is an object of the present invention to by including drawing
Guide shaft, stable vibration can be obtained and enjoy the advantages of impact strength is excellent, at the same time, slimming or width can be realized
The densification in direction, furthermore, it can obtain on the basis of the volume for suppressing magnet is reduced, magnetic when impact is applied
Body is not easy to movable piece of fracture etc. with balancing weight.
It is further an object that axle is integratedly split to the both sides for being configured at magnet, it is ensured that be enough it is expected
Driving force magnet volume, and can realize slimming and densification；Obtain a kind of magnet and axle when impact is applied
Between wait connecting portion to be not easy to produce movable piece etc. of fracture.
Technical scheme used by solution technical problem
To achieve these goals, linear vibration motor of the invention includes following structure.
A kind of linear vibration motor, it is characterised in that including：Movable piece, the movable piece include magnet portion and counterweight part；Frame
Body, the framework house above-mentioned movable piece；Coil, the coil are fixed on above-mentioned framework and drive above-mentioned magnet along a direction of principal axis
Portion；Elastic component, the elastic component apply elastic force, the driving that elastic force resistance applies to above-mentioned magnet portion to above-mentioned movable piece
Power；Leading axle, the leading axle are configured at the above-mentioned direction of principal axis both sides of above-mentioned magnet portion, and to above-mentioned movable piece along above-mentioned
The vibration of one direction of principal axis guides；And connecting elements, the connecting elements connect above-mentioned magnet portion and above-mentioned counterweight part.
A kind of linear vibration motor, it is characterised in that including：Movable piece, the movable piece are provided integrally with magnet portion, counterweight
Portion, axle and connecting elements, above-mentioned connecting elements connect above-mentioned magnet portion, above-mentioned counterweight part and above-mentioned axle；Framework, the framework so that
The mode that above-mentioned movable piece moves back and forth along a direction of principal axis houses above-mentioned movable piece；Coil, the coil are fixed on above-mentioned framework
And drive above-mentioned magnet portion along an above-mentioned direction of principal axis；And elastic component, the elastic component apply elastic force to above-mentioned movable piece,
The driving force that elastic force resistance applies to above-mentioned magnet portion, above-mentioned axle court are extended along the side of an above-mentioned direction of principal axis, and
And the front end of above-mentioned axle is set to free end, bearing is fixed with above-mentioned framework, the bearing is collateral by the free end of above-mentioned axle
Hold to slide freely, above-mentioned connecting elements is provided integrally with：Connection sheet portion, the connection sheet portion and one end of above-mentioned magnet portion connect
Connect, and with above-mentioned axis connection；And reinforced sheet portion, the reinforced sheet portion are extended from above-mentioned connection sheet portion, and with above-mentioned magnetic
The side connection in body portion.
Brief description of the drawings
Fig. 1 is the explanation figure (exploded perspective view) for the linear vibration motor for representing embodiment of the present invention.
Fig. 2 is the explanation figure (sectional view) for the linear vibration motor for representing embodiment of the present invention.
Fig. 3 is the explanation figure (exploded perspective view) of the movable piece for the linear vibration motor for representing embodiment of the present invention.
Fig. 4 is the explanation figure (sectional elevation) of the movable piece for the linear vibration motor for representing embodiment of the present invention.
Fig. 5 is the explanation figure (exploded perspective view) for the linear vibration motor for representing another embodiment of the present invention.
Fig. 6 is the explanation figure (exploded perspective view) for the linear vibration motor for representing embodiment of the present invention.
Fig. 7 is the explanation figure (sectional view) for the linear vibration motor for representing embodiment of the present invention.
Fig. 8 is the explanation figure (exploded perspective view) of the movable piece for the linear vibration motor for representing embodiment of the present invention.
Fig. 9 is that the explanation figure of another of the movable piece for the linear vibration motor for representing embodiment of the present invention is (three-dimensional
Figure).
Figure 10 is the exploded perspective view of Fig. 9 movable piece.
Figure 11 is to represent to be equipped with the electronic equipment (personal digital assistant device) of the linear vibration motor of embodiment of the present invention
Explanation figure.
Embodiment
Hereinafter, referring to the drawings embodiments of the present invention are illustrated with (following, the same-sign expression in different figures
Same area, omit the repeat specification in each figure).Fig. 1 to Fig. 4 shows the linear vibration motor of an embodiment of the present invention
Overall structure.X-direction in each figure represents direction of vibration (direction of principal axis), and Y-direction represents width, and Z-direction represents thickness
(height) direction.
Linear vibration motor 1 includes：Movable piece 10, the movable piece 10 include magnet portion 4 and counterweight part 7；Framework 2, the frame
Body 2 houses movable piece 10；Coil 3, the coil 3 are fixed on framework 2 and along a direction of principal axis driving magnet portions 4；And elastic structure
Part 6, the elastic component 6 apply elastic force to movable piece 10, revolt the driving force applied to magnet portion 4.
As long as framework 2 is with the mount structure that can house each several part, in the example in the figures, framework 2 has in square
Side wall 2B, 2C, 2D, 2E that the bottom surface 2A of shape periphery erects.In addition, framework 2 includes the collecting in covering framework 2 as needed
The cover plate 2Q of thing.Cover plate 2Q is formed as being installed on the rectangular plate-like of side wall 2B-2E upper surface.Framework 2 can be by metallic plate
It is processed (punch process etc.) and is formed.In the example in the figures, framework 2 is in the size ratio of thickness direction (diagram Z-direction)
The size of width (diagram Y-direction) is small, the size of direction of vibration (diagram X-direction) is than width (diagram Y-direction)
Size want the approximately parallelepiped body shape (box-formed shape) of big thickness of thin.
Linear vibration motor 1 forms driving by a part i.e. magnet portion 4 of the coil 3 and movable piece 10 that are fixed on framework 2
Portion.Inputted by the way that vibration is produced into electric current from the signal input part 2A1 for being arranged at framework 2 to the coil 3 for being fixed on framework 2, from
And apply the Lorentz force (driving force) along a direction of principal axis (diagram X-direction) to magnet portion 4.
Magnet portion 4 be magnet slice 4A, 4B, 4C of flattened rectangular are configured in a manner of homopolarity each other is opposite it is multiple and in
Between clip interval yoke 4D, 4E and be combined into magnet slice 4A, 4B, 4C, above-mentioned magnet slice 4A, 4B, 4C have along an axle
The polarity in direction (diagram X-direction).In the affixed stiffener 5 in the side of magnet portion 4, the rigidity of magnet portion 4 is thereby improved.
Magnet portion 4 winding cables of the coil 3 along Y, Z-direction around the direction of magnetic pole towards X-direction, in the upper of the coil 3
One or both sides in surface and lower surface, side is further fixed on to the inner surface of framework 2 as needed.Coil 3 is to frame
The fixation of body 2 both can be to be directly fixed on framework 2 or coil 3 is wound in after bobbin bobbin being fixed on
Framework 2.
In the example in the figures, the counterweight part 7 of movable piece 10 and a direction of principal axis (diagram X-direction) both ends of magnet portion 4
Connection.Counterweight part 7 can be made up of higher metal material of proportion (such as tungsten) etc., and in the example in the figures, counterweight part 7 is rectangular
Cross sectional shape, the height of the big Z-direction of thickness of the rectangular cross sectional shape with than magnet portion 4 and with wider than magnet portion 4
Spend the width of big Y-direction.Counterweight part 7 is connected via connecting elements 11 with magnet portion 4.
Pivot suspension has a pair of leading axles 8 in framework 2.A pair of leading axles 8 are split along a direction of principal axis (diagram X-direction)
Counterweight part 7 is fixed in configuration, one side, and another side is reversely with each otherly prominent and forms free end.Above-mentioned leading axle 8 with can
The gravity axis of moving part 10 coaxially configures, and the vibration along a direction of principal axis to movable piece 10 guides.In addition, a pair of guiding
Axle 8 can also be arranged side by side along a direction of principal axis in a manner of central shaft is parallel.
Counterweight part 7 includes leading axle support 7B, and leading axle support 7B is used to support leading axle 8.Guiding
E axle supporting portion 7B is that one end side bearing is in above-mentioned leading axle branch from the part that the end 7A of counterweight part 7 is recessed along a direction of principal axis
Bearing portion 7B leading axle 8 is supported to be slid freely along a direction of principal axis (diagram X-direction) by bearing 9, and above-mentioned bearing 9 is via supporting
Portion 2S is installed on the bottom surface 2A of framework 2.Now, the leading axle support 7B of counterweight part 7 has with housing 9 corresponding size of bearing
Width, by make bearing 9 enter above-mentioned leading axle support 7B in, it is ensured that the large magnitude of movable piece 10.
Elastic component 6 is not configured coaxially with a pair of leading axles 8 along a direction of principal axis, and movable piece 10 is applied and revolted
The elastic force of driving force as caused by coil 3 and magnet portion 4.In the example in the figures, using flexible along an axial direction (X-direction)
Helical spring is side wall 2B, 2C that the elastic component 6 of two is clipped in counterweight part 7 and framework 2 as elastic component 6, and by side
Between.In the example in the figures, elastic component 6 is configured to parallel with a pair of leading axles 8.Moreover, one end of elastic component 6 is locking
In support projection 2P, above-mentioned support projection 2P is arranged at side wall 2B, 2C of framework 2, and the other end of elastic component 6 is engaging in supporting
Projection 7A1, above-mentioned support projection 7A1 are arranged at the end 7A of counterweight part 7.
Metal stiffener 5 is connected with by bonding etc. in magnet portion 4, the stiffener 5 (is schemed along a direction of principal axis
Show X-direction) configuration.Thereby, multiple magnet slice 4A, 4B, 4C are integratedly strengthened with interval yoke 4D, 4E.In contrast, to magnet
The connecting elements 11 that portion 4 is attached with counterweight part 7 is metal, as shown in figure 4, in connecting portion P1, stiffener 5 with
Connecting elements 11 is hermetically laser welded.In addition, in connecting portion P2, connecting elements 11 is hermetically laser welded with counterweight part 7.
In connecting portion P2, the end face of connecting elements 11 with the side of counterweight part 7 is solder side and coplanar.Moreover, along with
The bearing of trend of the orthogonal connecting elements 11 of one direction of principal axis is attached the laser irradiation at the P2 of position.By will so connect structure
Part 11 and the laser welding of counterweight part 7, even if counterweight part 7 is the metal that (fusing point is high) is difficult to solder to as tungsten alloy, connect structure
Part 11 also will not first be melted than counterweight part 7, and firm engagement can be realized by laser welding.Metal material as connecting elements 11
Material, preferably select the material of the middle fusing point of the metal material of metal material and stiffener 5 with counterweight part 7.In addition, even
Connection member 11 can not only be directly welded in stiffener 5, can also be directly welded in magnet portion 4 (magnet slice 4A, 4C).
Connecting elements 11 has embedded hole 11B in central portion opening, and being fitted together in embedded hole 11B has the (magnet slice of magnet portion 4
4A, 4C) end.So, by making the end of magnet portion 4 chimeric with the embedded hole 11B of connecting elements 11, can easily carry out
The positioning for coordinating the gravity axis of counterweight part 7 and magnet portion 4, make so as to efficiently carry out counterweight part 7 and the connection of magnet portion 4
Industry.
Connecting elements 11 includes abutting part 11A, and abutting part 11A is prominent towards the inner surface side (bottom surface 2A sides) of framework 2.It is logical
Cross and above-mentioned abutting part 11A is set and turns into following structure：When movable piece 10 rotates around leading axle 8, connecting elements 11 only has
A part is that abutting part 11A abuts with the slip supporting part 2R on the 2A of bottom surface, and inner surface of the counterweight part 7 not with framework 2 contacts.Match somebody with somebody
Weight portion 7 is difficult into low friction therefore, when counterweight part 7 is contacted and slided with the inner surface of framework 2, slide Surface Machining negative
Load becomes big and noise generation and also becomes big, but the abutting part 11A by being readily processible to smooth connecting elements 11 is held in slip
Slided on load portion 2R, smooth and quiet vibration can be obtained, and then the long service life of linear vibration motor 1 can be realized.
Fig. 5 represents another form example of the linear vibration motor 1 of embodiment of the present invention.A pair of leading axles 8 of this example
Framework 2 is fixed in one side, and another side is sliding freely supported on a pivot on the side of movable piece 10, other structures and above-mentioned example
It is identical.
In the example in the figures, a side of a pair of leading axles 8 is by 2 liang of dot points of framework.Specifically, leading axle 8
Side wall 2B, 2C of framework 2 is fixed in end, and in the position supported portion 2S supportings left from the end of leading axle 8.
A direction of principal axis (diagram X-direction) is provided with hole 7C on movable piece 10, hole 7C supplies the free end side of leading axle 8
(another side) is inserted.Bearing 9 is provided with the 7C of hole, the bearing 9 makes leading axle 8 slide freely in X direction, thereby, guiding
The another side of axle 10 is sliding freely supported on the bearing 9 of movable piece 10.The hole 7C for being arranged at movable piece 10 is arranged at movably
The counterweight part 7 of part 10, hole is not provided with the magnet portion 4 of movable piece 10.So, a pair of cantilevers of leading axle 8 are held in framework
2, in free end side (another side), magnet 4 is configured with extended line.
Because the counterweight part 7 of above-mentioned linear vibration motor 1 can be formed as rectangular shape, as long as and in the counterweight part 7
It is internally formed and hole 7C that the leading axle 8 that runs through is correspondingly sized, therefore can fully increases the volume of counterweight part 7.Thereby,
The quality of the movable piece 10 of the inertia force of composition vibration can fully be ensured.
Action to above-mentioned linear vibration motor 1 illustrates.When not driving, bullet of the movable piece 10 in elastic component 6
The centre of oscillation position of dynamic balance is static.Then, when the coefficient of elasticity by the quality of movable piece 10 and elastic component 6 determined
When the vibration of resonant frequency produces electric current input coil 3, apply the driving force of X-direction to magnet portion 4, by above-mentioned driving force and
The elastic repulsive force of elastic component 6, movable piece 10 are of reciprocating vibration along a direction of principal axis.
A pair of leading axles 8 of linear vibration motor 1 have no through magnet portion 4, therefore, by straight with a pair of leading axles 8
The not related Y-direction in footpath is wider and magnet portion 4 that Z-direction is relatively thin, can ensure that the magnet volume that can obtain sufficient driving force.
It can thereby obtain obtaining the slim linear vibration motor 1 of sufficient driving force.
If moreover, with the left and right sides of magnet set along a pair of fixing axles of direction of vibration prior art compared with,
The linear vibration motor 1 of e axle supporting is then carried out to movable piece 10 using a pair of leading axles 8 due to not needed in the left and right of magnet portion 4
The space of axle is configured, therefore the width densification of left and right can be made.
Further, since elastic component 6 is configured to it is not coaxial with a pair of leading axles 8, therefore can be straight with a pair of leading axles 8
Footpath independently reduces the diameter of elastic component 6.In the case where reducing the diameter of elastic component 6, the setting of elastic force can pass through bullet
Property component 6 material selection or make multiple elastic components 6 side by side wait suitably set.It thereby can also make to carry out axle to movable piece 10
The linear vibration motor 1 of supporting is thinned.
Now, it is contemplated that being rotated by the movable piece 10 of a pair of e axle supportings of leading axle 8 around a pair of leading axles 8, and movable piece 10
The left and right sides swing up and down.On the other hand, the bottom for the connecting elements 11 being attached to counterweight part 7 with magnet portion 4 is arranged to
Protruded from counterweight part 7 and be used as abutting part 11A, slide supporting part 2R in the inner surface setting of framework 2, slip supporting part 2R is supplied
The abutting part 11A sliding contacts of connecting elements 11.Thereby, by sliding supporting part 2R with formation such as resin materials, even in even
In the case that the abutting part 11A of connection member 11 contacts with the inner surface of framework 2, it can also suppress generation of noise etc., and can maintain
Stable vibration.
As described above, the linear vibration motor 1 of embodiment of the present invention by a pair of leading axles 8 to movable piece
10 carry out e axle supportings and vibrate the movable piece 10, thereby, can obtain stable vibration in the same manner as the situation of setting fixing axle,
And traumatic resistance during drop impact can be obtained.
Then, according to Fig. 6 to Figure 10, another embodiment of the present invention is illustrated.
Linear vibration motor 1 includes：Movable piece 10, the movable piece 10 are provided integrally with magnet portion 4, counterweight part 7, axle 8, company
Connection member 20 and connection sheet 29, above-mentioned connecting elements 20 and connection sheet 29 connect above-mentioned magnet portion 4, above-mentioned counterweight part 7 and above-mentioned
Axle 8；Framework 2, the framework 2 house above-mentioned movable piece 10 in a manner of movable piece 10 is moved back and forth along a direction of principal axis；Coil
3, the coil 3 is fixed on framework 2 and along above-mentioned direction of principal axis driving magnet portion 4；And elastic component 6, the elastic component 6 are right
Movable piece 10 applies elastic force, revolts the driving force applied to magnet portion 4.
One side of an above-mentioned direction of principal axis of the movable piece 10 in magnet portion 4 is connected with connecting elements 20, and another
Side is connected with connection sheet 29.Counterweight part 7 and axle 8 are connected on connecting elements 20 and connection sheet 29.Counterweight part 7 and axle
8 are set to configure magnet portion 4 in centre, and above-mentioned counterweight part 7 and above-mentioned axle 8 are disposed in along the side of an above-mentioned direction of principal axis and
Opposite side, the protrusion side of the axle 8 protruded from counterweight part 7 is free end (reference picture 6 and Fig. 7).
Magnet portion 4 be magnet slice 4A, 4B, 4C of flattened rectangular are configured in a manner of homopolarity each other is opposite it is multiple and in
Between clip interval yoke 4D, 4E and be combined into magnet slice 4A, 4B, 4C, above-mentioned magnet slice 4A, 4B, 4C have along an axle
The polarity in direction (diagram X-direction).The reinforced sheet portion 22 of connecting elements 20 is connected with the sidepiece of magnet portion 4, is added by above-mentioned
The rigidity of magnet portion 4 is improved in strong piece portion 22.
Connecting elements 20 is formed as being provided integrally with the U-shaped in connection sheet portion 21 and two reinforced sheet portions 22, above-mentioned connection
Piece portion 21 is bonded and fixed to the one end of magnet portion 4, and is connected with the axle 8 of a side, and two above-mentioned reinforced sheet portions 22 are from connection
Two sides in piece portion 21 are extended, and the two sides of magnet portion 4 are adhered to via bonding agent.Above-mentioned connecting elements 20 for example by
The higher nonmagnetic material of the rigidity such as nonmagnetic stainless steel is formed.
Hole 21A is provided with connection sheet portion 21 and embedded hole 21B, above-mentioned hole 21A are inserted along central axis for axle 8 and connected
Connect, above-mentioned embedded hole 21B is positioning away from being fitted together to for the convex portion 7D of counterweight part 7 from central axis.
It is preferred that the connection of hole 21A and axle 8 is set to dual-purpose press-in and welding, but can also be set to only with press-in or only with weldering
Connect.
Furthermore it is preferred that connection sheet portion 21 and the connection of counterweight part 7 are set to, dual-purpose is Nian Jie and welding, but can also be set to only with
It is bonded or only with welding.
In addition, connection sheet portion 21 is set to using the bonding of bonding agent with the connection of magnet portion 4, but it can also be set to dual-purpose bonding
And welding, or only with welding.
Reinforced sheet portion 22 is set to be extended from a side in connection sheet portion 21 along an above-mentioned direction of principal axis, and across multiple
Magnet slice 4A, 4B, 4C and interval yoke 4D, 4E, and it is bonded and fixed to above-mentioned magnet slice 4A, 4B, 4C and above-mentioned interval yoke 4D, 4E
Side.
An above-mentioned direction of principal axis in above-mentioned reinforced sheet portion 22 is formed as in magnet thickness direction (figure by ectocentral part
The Z-direction shown) on than other parts narrow width, be thereby not easy to interfere coil 3.
Connection sheet 29 is the tabular structure with the end of the opposite side of connection sheet portion 21 being bonded and fixed in magnet portion 4
There is hole 29A and embedded hole 29B, above-mentioned hole 29A to insert and connect along central axis for the axle 8 of the opposing party for part, the connection sheet 29,
Above-mentioned embedded hole 29B is positioning away from being fitted together to for the convex portion 7D of counterweight part 7 from central axis.With the above-mentioned phase of reinforced sheet portion 22
Together, above-mentioned hole 29A and embedded hole 29B connect for the counterweight part 7 and axle 8 of the opposing party.Above-mentioned connection sheet 29 is for example by nonmagnetic
The higher nonmagnetic material of the rigidity such as stainless steel is formed.
Above-mentioned connection sheet 29 is connected by welding with the end in two reinforced sheet portions 22, but is used as another example, also can be right
End shape is made an effort and is fitting to connection.
The end of the bottom surface side of framework 2 in above-mentioned connection sheet 29 than the equidirectional side of counterweight part 7 end face towards the bottom surface of framework 2
Side protrudes (reference picture 7).When movable piece 10 rotates, above-mentioned ledge supports as with what slip supporting part 2R described later was abutted
Socket part 29C plays function.
Additionally, it is preferred that the connection of hole 29A and axle 8 is set to dual-purpose press-in and welding, but can also be set to only with press-in or only
Using welding.
Furthermore it is preferred that connection sheet 29 and the connection of counterweight part 7 are set to, dual-purpose is Nian Jie and welding, but can also be set to only with viscous
Connect or only with welding.
In addition, connection sheet 29 and the connection of magnet portion 4 are set to using the bonding of bonding agent, but can also be set to dual-purpose bonding and
Welding, or only with welding.
In addition, according to example illustrated, hole 21A, 29A and embedded hole 21B, 29B are set to through hole, but also can be by one
Partly or entirely bottom outlet has been set to it.In addition, also convex portion 7D can be set to opposite with embedded hole 21B, 29B concavo-convex relationship.
Counterweight part 7 connects via a direction of principal axis (diagram X-direction) both ends in connection sheet portion 21 and connection sheet 29 and magnet portion 4
Connect.Above-mentioned counterweight part 7 can be made up of higher metal material of proportion (such as tungsten) etc., and in the example in the figures, counterweight part 7 is formed
For rectangular cross sectional shape, the height of the big Z-direction of thickness of the rectangular cross sectional shape with than magnet portion 4 and with than magnet portion
The width of the big Y-direction of 4 width.
On above-mentioned counterweight part 7, the through hole 7E (reference picture 8) inserted for axle 8 is provided with central axis, therefrom
Mandrel line positions away from being provided with convex portion 7D.
In addition, the aixs cylinder outgoing direction side in above-mentioned counterweight part 7, to be recessed along an above-mentioned direction of principal axis towards the side of magnet portion 4
Mode recess 7F is set, the space configuration axle 8 in recess 7F.Moreover, recess 7F is supplied in part or all of bearing 9
Put, it can be ensured that the large magnitude of movable piece 10.
As long as framework 2 is with the mount structure that can house each several part, in the example in the figures, framework 2 is included in square
Wall portion 2B, 2C, 2D, 2E that the bottom surface 2A of shape periphery erects.In addition, framework 2 includes the collecting in covering framework 2 as needed
The cover plate 2Q of thing.Cover plate 2Q is formed as being installed on the rectangular plate-like of wall portion 2B-2E upper surface.Framework 2 can be by metallic plate
It is processed (punch process etc.) and is formed.In the example in the figures, framework 2 is in the size ratio of thickness direction (diagram Z-direction)
The size of width (diagram Y-direction) is small, the size of direction of vibration (diagram X-direction) is than width (diagram Y-direction)
Size want the approximately parallelepiped body shape (box-formed shape) of big flat (flat shape).
Two sides of the above-mentioned direction of principal axis in the bottom surface 2A of framework 2 are fixed with bearing 9, and two axles 8 are propped up respectively
Hold to slide freely.If describe in detail, each side in the side and opposite side of an above-mentioned direction of principal axis, in the bottom surface of framework 2
2A is provided with bearing support 2A2 with vertical plate, and is fitted together in a manner of penetrating above-mentioned bearing support 2A2 and has substantially cylinder
The bearing 9 of shape.Each bearing 9 is inserted for axle 8 and slided freely towards axial direction.
In addition, on the bottom surface 2A of framework 2, slip supporting part is provided with a manner of with the position correspondence of connection sheet 29
2R。
When movable piece 10 rotates around axle 8, the abutting part 29C of supporting part 2R bearer connections piece 29 is slided, so as to prevent matching somebody with somebody
Weight portion 7 directly contacts with the inner surface of framework 2.Because counterweight part 7 is difficult to Surface Machining into low friction, therefore, if counterweight
Portion 7 contacts and slided with the inner surface of framework 2, then sliding load change be present greatly and the generation of noise also becomes big risk.However,
In the present embodiment, because the abutting part 29C for being set to make to be readily processible to smooth connection sheet 29 is on supporting part 2R is slided
Slide, therefore movable piece 10 can be made smooth and undisturbedly vibrated, and then the long service life of linear vibration motor 1 can be realized.
Magnet portion 4 winding cables of the coil 3 along Y, Z-direction around the direction of magnetic pole towards X-direction, in the upper of the coil 3
One or both sides in surface and lower surface, side is further fixed on to the inner surface of framework 2 as needed.Coil 3 is to frame
The fixation of body 2 both can be to be directly fixed on framework 2 or coil 3 is wound in after bobbin bobbin being fixed on
Framework 2.
According to example illustrated, above-mentioned coil 3 is provided with two in a manner of being arranged along an above-mentioned direction of principal axis.Above-mentioned two
The coiling direction of the electric wire of a side and the opposing party in coil 3 is opposite each other.And each coil 3 is with across adjacent magnet slice
4A, 4B (or 4B, 4C) mode configure the close centre between above-mentioned adjacent magnet.
Two coils 3 are connected in series, the signal input part 2A1 exposed towards the outside by the both ends of its electric wire and from framework 2
Terminal electrical connection.
Movable piece 10 is being fitted into the operation in coil 3, in the connection sheet 29 of side, counterweight part 7 and axle 8 from movable
In the state of part 10 unloads, the part of magnet portion 4 is inserted to coil 3, afterwards, two of connection sheet 29 and connecting elements 20 plus
The end connection in strong piece portion 22, then, axle 8 is connected with connection sheet 29, and then, counterweight part 7 is assemblied in axle 8 with ring-type, and with
Connection sheet 29 connects.
In addition, elastic component 6 does not configure coaxially with a pair of axles 8 along a direction of principal axis, and movable piece 10 is applied instead
The elastic force of the anti-driving force as caused by coil 3 and magnet portion 4.In the example in the figures, using flexible along an axial direction (X-direction)
Helical spring as elastic component 6, and by side be the elastic component 6 of two be clipped in counterweight part 7 and framework 2 wall portion 2B,
Between 2C.In the example in the figures, elastic component 6 is configured to parallel with a pair of axles 8.Moreover, one end of elastic component 6 engaging in
Support projection 2P (reference picture 6), above-mentioned support projection 2P are arranged at wall portion 2B, 2C of framework 2, the other end card of elastic component 6
Due to support projection 7G (reference picture 8), above-mentioned support projection 7G is arranged at the end of counterweight part 7.
Then, the characteristic action effect of the linear vibration motor 1 of said structure is described in detail.
When not driving (unpowered state), movable piece 10 is quiet in the centre of oscillation position of the Spring balanced of elastic component 6
Only.
When the vibration for the resonant frequency for determining the coefficient of elasticity by the quality of movable piece 10 and elastic component 6 produces electric current
Via framework 2 signal input part 2A1 input coils 3 when, to magnet portion 4 apply a direction of principal axis (X-direction of diagram) driving
Power (Lorentz force), by above-mentioned driving force and the elastic repulsive force of elastic component 6, movable piece 10 carries out stabilization along a direction of principal axis
It is of reciprocating vibration.
When being impacted when above-mentioned of reciprocating vibration and because falling etc., form movable piece 10 multiple magnet slice 4A, 4B,
4C, interval yoke 4D, 4E, counterweight part and axle 8 etc. are by the connecting elements 20 and connection sheet 29 of said structure and by securely one
Body, therefore, its connecting portion etc. will not be easily disengaged from, vibration resistance and excellent impact resistance.
Also, due to being that axle 8 is integratedly split to the structure for being configured at the both sides of magnet portion 4, therefore with being set to be fixed on
The axle of frame side is inserted through prior art of magnet portion etc. and compared, and can ensure that the magnet volume for being enough to obtain desired driving force.
On this basis, due to axle 8 is connected into (fixation) in the connecting elements 20 of raising dimensional accuracy easier than counterweight part 7
Connection sheet portion 21 and connection sheet 29 hole 21A (or 29A), therefore easily make axle 8 along a direction of principal axis.
In addition, the movable piece 10 of said structure can be replaced as the movable piece 10 ' shown in Fig. 9 and Figure 10.
Relative to above-mentioned movable piece 10, connecting elements 20 and connection sheet 29 are replaced as the He of connecting elements 30 by movable piece 10 '
Reinforced sheet 39, other structures are identical with above-mentioned movable piece 10.
Connecting elements 30 is integrally formed as U word by the first connection sheet portion 31, the second connection sheet portion 32 and reinforced sheet portion 33
Shape, above-mentioned first connection sheet portion 31 is bonded and fixed to one end of magnet portion 4, and is connected with the axle 8 of a side, above-mentioned second connection
Piece portion 32 is bonded and fixed to the other end of magnet portion 4, and is connected with the axle 8 of the opposing party, and above-mentioned reinforced sheet portion 33 is along an axle
Direction is bonded and fixed to the one side of magnet portion 4.
It is identical with above-mentioned connection sheet portion 21, hole 31A and recess 31B, above-mentioned hole 31A confessions are provided with the first connection sheet portion 31
The axle 8 of one side is inserted along central axis and connected, and above-mentioned recess 31B is positioned away from for the convex of counterweight part 7 from central axis
Portion 7D is fitted together to.
In the same manner, hole 32A is also equipped with the second connection sheet portion 32 and embedded hole 32B, above-mentioned hole 32A supply the axle of the opposing party
8 insert connection along central axis, and above-mentioned recess 32B is positioning away from being fitted together to for the convex portion 7D of counterweight part 7 from central axis.
Magnet thickness direction (Z-direction of diagram) in above-mentioned second connection sheet portion 32 is dimensioned so as to than equidirectional in coil 3
Size it is small, so that in assembling operation, the second connection sheet portion 32 is inserted to coil 3 (reference picture 10).
In addition, the symbol 31C in Figure 10 is the abutting part protruded from the first connection sheet portion 31 towards the bottom surface side of framework 2.With it is upper
It is identical to state connection sheet portion 21 and the connection sheet 29 of movable piece 10, when movable piece 10 ' rotates, above-mentioned abutting part 31C is held with slip
The 2R sliding contacts of load portion, can prevent counterweight part 7 from directly being contacted with framework 2, and make movable piece 10 ' smooth and undisturbedly vibrate.
Reinforced sheet portion 33 across multiple magnet slice 4A, 4B, 4C and is spaced yoke 4D, 4E in the side of a side of magnet portion 4,
And it is bonded and fixed to above-mentioned magnet slice 4A, 4B, 4C and above-mentioned interval yoke 4D, 4E side.
Connection sheet 39 across multiple magnet slice 4A, 4B, 4C and is spaced yoke 4D, 4E in the side of the opposing party of magnet portion 4,
And above-mentioned magnet slice 4A, 4B, 4C and above-mentioned interval yoke 4D, 4E side are bonded and fixed to, and the length side of the connection sheet 39
To both ends be welded in the end in the first connection sheet portion 31 and the end in the second connection sheet portion 32 respectively.
Additionally, it is preferred that the connection of hole 31A (or 32A) and axle 8 is set to dual-purpose press-in and welding, but can also be set to only with pressure
Enter or only with welding.
Furthermore it is preferred that the first connection sheet portion 31 (or second connection sheet portion 32) is set to Nian Jie, weldering with the connection of counterweight part 7
Connect and convex portion 7D and recess 31B (or 32B) the chimeric forms for all combine and being implemented, but can also be set to only be to be bonded
Combination with welding, be only bonding and above-mentioned chimeric combination, be only welding and above-mentioned chimeric combination, be only bonding, be only
Welding is only above-mentioned chimeric.
In addition, the connection of the first connection sheet portion 31 (or second connection sheet portion 32) and magnet portion 4 is set to using bonding agent
Bonding, but dual-purpose bonding and welding can be also set to, or only with welding.
Therefore, according to the linear vibration motor for the movable piece 10 ' for having used said structure, with the movable piece 10 illustrated before
It is identical, can be by the connecting elements 30 of said structure and reinforced sheet 39 by structure on the basis of it can realize slimming and densification
It is firmly ground integrated into multiple magnet slice 4A, 4B of movable piece 10 ', 4C, interval yoke 4D, 4E, counterweight part 7 and axle 8 etc., because
This, connecting portion of each several part etc. is not easily fallen out, and can improve vibration resistance and impact resistance.
On this basis, due to axle 8 is connected into (fixation) in the connecting elements 30 of raising dimensional accuracy easier than counterweight part 7
The first connection sheet portion 31 and the second connection sheet portion 32 hole 31A (or 32A), therefore easily make axle 8 along a direction of principal axis.
Then, to one i.e. mobile electron of the electronic equipment of the linear vibration motor 1 that is equipped with embodiment of the present invention
Equipment 100 illustrates (reference picture 11).
Linear vibration motor 1 is assemblied in the basket of the flat box-like of thickness of thin and forms shifting by mobile electronic device 100
Dynamic information terminal (such as smart mobile phone and tablet personal computer etc.).
According to said structure, stable vibration can be obtained by linear vibration motor 1, and slimming and width side can be realized
To densification, can by be not likely to produce noise stabilization vibration and response well to user pass on communication function in
Signal receive or the action of warning function etc. start, the end time.In addition, pass through the slimming of linear vibration motor 1 and tight
Gathering, the mobile electronic device 100 for pursuing high portability or design can be obtained.It is in by respectively to be additionally, since linear vibration motor 1
The compact form being partially housed in the framework 2 for the rectangular-shape for inhibiting thickness, therefore can be set in the mobile electron of slimming
Standby 100 inside is equipped with preferable space efficiency.Further, since the impact strength of linear vibration motor 1 is high and durable
Property is also high, therefore can obtain the long-life and be not susceptible to the mobile electronic device 100 of failure.
In addition, in the above-described embodiment, as the preferred configuration for significantly playing above-mentioned action effect, by multiple magnet slices
4A, 4B, 4C and interval yoke 4D, 4E form magnet portion 4, but are used as another example, can also apply above-mentioned connecting elements 20 (or 30)
In the magnet portion 4 being made up of single magnet.
In addition, in the above-described embodiment, using helical spring as elastic component 6, but as the another of elastic component 6
Example, it can also be set to the form using leaf spring, the form using elastic components such as rubber and by helical spring, leaf spring, above-mentioned elastic component
Etc. appropriately combined form etc..
In addition, in the above-described embodiment, as particularly preferred form, via connecting elements 20 and connection sheet 29 by axle
8 are connected with two sides of magnet portion 4, and are respectively supported above-mentioned two axle 8 to slide freely by bearing 9, but as another
Example, can also be set to be connected axle 8 with an only side for magnet portion 4 via connecting elements 20, and by bearing 9 to the single axle 8
The form supported.
In addition, in the above-described embodiment, form the connecting elements 20 of the U-shaped of an end-side openings of a direction of principal axis
(reference picture 8) or (reference picture of connecting elements 30 by the U-shaped of an end-side openings of width (Y-direction of diagram)
10), but as another example of above-mentioned connecting elements, it can also be set to be provided integrally with connection sheet portion and the L-shaped in reinforced sheet portion (is changed
Yan Zhi, the form in the reinforced sheet portion 22 of an only side is eliminated from connecting elements 20), above-mentioned connection sheet portion and one end of magnet portion 4
Connection, and be connected with axle 8, above-mentioned reinforced sheet portion is extended from above-mentioned connection sheet portion, and is connected with the one side of magnet portion 4
Connect.
Further there is illustrated the mobile electron of the smart mobile phone for being built-in with linear vibration motor 1 or tablet personal computer as Figure 11
Preferable one of equipment 100, but as another example of above-mentioned mobile electronic device 100, also can built-in linear vibrating motor 1 and
Form mobile phone, portable game machine, mobile model communication clock including wearable communication terminal wearable electronic and
Other portable electric appts.
More than, embodiments of the present invention are described in detail referring to the drawings, but specific structure be not limited to it is above-mentioned
Embodiment, it is also included in the present invention even if having carried out design alteration etc. without departing from the scope of the subject in the invention.In addition,
As long as the respective embodiments described above do not have special contradiction and problem in its purpose and structure etc., respective technology can be continued to use and gone forward side by side
Row combination.
(symbol description)
1：Linear vibration motor,
2：Framework, 2A：Bottom surface, 2A1：Signal input part, 2A2：Bearing support,
2B、2C、2D、2E：Side wall (wall portion), 2S：Support,
2P：Support projection, 2Q：Cover plate, 2R：Slide supporting part,
3：Coil, 4：Magnet portion,
4A、4B、4C：Magnet slice,
4D、4E：It is spaced yoke,
5：Stiffener, 6：Elastic component,
7：Counterweight part, 7A：End, 7A1：Support projection,
7B：Leading axle support, 7C：Hole, 7D：Convex portion, 7E：Through hole,
7F：Recess, 7G：Support projection,
8：Leading axle (axle), 9：Bearing, 10,10 '：Movable piece,
11：Connecting elements, 11A：Abutting part, 11B：Embedded hole,
20：Connecting elements, 21：Connection sheet portion, 21A：Hole, 21B：Fitting portion,
22：Reinforced sheet portion,
29：Connection sheet, 29A：Hole, 29B：Embedded hole, 29C：Abutting part,
30：Connecting elements, 31：First connection sheet portion, 31A：Hole, 31B：Recess,
31C：Abutting part, 32：Second connection sheet portion, 32A：Hole, 32B：Recess,
33：Reinforced sheet portion, 39：Reinforced sheet,
100：Personal digital assistant device.
Claims (13)
- A kind of 1. linear vibration motor, it is characterised in that including：Movable piece, the movable piece include magnet portion and counterweight part；Framework, the framework house the movable piece；Coil, the coil are fixed on the framework and drive the magnet portion along a direction of principal axis；Elastic component, the elastic component apply elastic force, the driving that elastic force resistance applies to the magnet portion to the movable piece Power；Leading axle, the leading axle are configured at the direction of principal axis both sides of the magnet portion, and to the movable piece along institute The vibration for stating a direction of principal axis guides；AndConnecting elements, the connecting elements connect the magnet portion and the counterweight part.
- 2. linear vibration motor as claimed in claim 1, it is characterised in thatThe connecting elements is metal system, and is welded in the metal configuration section.
- 3. linear vibration motor as claimed in claim 2, it is characterised in thatMetal stiffener is connected with the magnet portion, the stiffener configures along a direction of principal axis,The connecting elements is welded in the stiffener.
- 4. linear vibration motor as claimed any one in claims 1 to 3, it is characterised in thatThe connecting elements offers embedded hole, and the end for having stated magnet portion is fitted together in the embedded hole.
- 5. the linear vibration motor as any one of Claims 1-4, it is characterised in thatThe connecting elements includes abutting part, and the abutting part protrudes towards the inner surface side of the framework, and the abutting part is with being arranged at The slip supporting part of the inner surface of the framework abuts.
- A kind of 6. linear vibration motor, it is characterised in that including：Movable piece, the movable piece are provided integrally with magnet portion, counterweight Portion, axle and connecting elements, the connecting elements connect magnet portion, the counterweight part and the axle；Framework, the framework so that The mode that the movable piece moves back and forth along a direction of principal axis houses the movable piece；Coil, the coil are fixed on the framework And drive the magnet portion along a direction of principal axis；And elastic component, the elastic component apply elastic force to the movable piece, The driving force that elastic force resistance applies to the magnet portion,The axle court is extended along the side of a direction of principal axis, and the front end of the axle is set into free end, in institute State and bearing is fixed with framework, the bearing is by the free end side supporting of the axle to slide freely, and the connecting elements is integratedly Have：Connection sheet portion, the connection sheet portion are connected with one end of the magnet portion, and with the axis connection；And reinforced sheet portion, The reinforced sheet portion is extended from the connection sheet portion, and is connected with the side of the magnet portion.
- 7. linear vibration motor as claimed in claim 6, it is characterised in thatThe magnet portion is made up of the multiple magnet slices engaged on a direction of principal axis, and the reinforced sheet portion is with across multiple institutes The mode for stating magnet slice is set.
- 8. linear vibration motor as claimed in claims 6 or 7, it is characterised in thatThe axle is set to configure the magnet portion in centre, so that the axle is respectively arranged at the side of a direction of principal axis And opposite side, the connection sheet portion of the connecting elements and the axis connection of the side,The linear vibration motor includes connection sheet, and the connection sheet is connected with the other end of the magnet portion, and with it is described another The axis connection of side,Side of the reinforced sheet portion to be extended from the both ends in the connection sheet portion and be connected with the two sides of the magnet portion Formula is provided with two, and two front in the reinforced sheet portion are connected with the connection sheet.
- 9. linear vibration motor as claimed in claims 6 or 7, it is characterised in thatThe axle is set to configure the magnet portion in centre, so that the axle is respectively arranged at the side of a direction of principal axis And opposite side,The connecting elements is integrally formed as U-shaped by the first connection sheet portion, the second connection sheet portion and reinforced sheet portion, described First connection sheet portion is connected with one end of the magnet portion, and with the axis connection of a side, the second connection sheet portion with The other end connection of the magnet portion, and with the axis connection of the opposing party, the reinforced sheet portion is along a direction of principal axis It is connected with the one side of the magnet portion.
- 10. the linear vibration motor as any one of claim 6 to 9, it is characterised in thatHole is provided with the connection sheet portion or the connection sheet, is fitted together in the hole and has stated axle.
- 11. the linear vibration motor as any one of claim 6 to 10, it is characterised in thatThe counterweight part is assemblied in the axle with ring-type, and the counterweight part and the connection sheet portion or the connection sheet are connect Close.
- 12. linear vibration motor as claimed in claim 11, it is characterised in thatThe counterweight part is provided with recess or convex portion, and in the connection sheet portion or the connection sheet with the recess Or the mode that the convex portion is fitted together to is provided with convex portion or recess.
- A kind of 13. personal digital assistant device, it is characterised in thatIncluding the linear vibration motor any one of claim 1 to 12.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015132778A JP6479595B2 (en) | 2015-07-01 | 2015-07-01 | Linear vibration motor |
| JP2015-132778 | 2015-07-01 | ||
| JP2015-149858 | 2015-07-29 | ||
| JP2015149858A JP6453182B2 (en) | 2015-07-29 | 2015-07-29 | Linear vibration motor and portable electronic device including the linear vibration motor |
| PCT/JP2016/069557 WO2017002950A1 (en) | 2015-07-01 | 2016-06-30 | Linear vibration motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107710572A true CN107710572A (en) | 2018-02-16 |
| CN107710572B CN107710572B (en) | 2021-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680035761.8A Active CN107710572B (en) | 2015-07-01 | 2016-06-30 | Linear vibration motor |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107710572B (en) |
| WO (1) | WO2017002950A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114583914A (en) * | 2020-11-30 | 2022-06-03 | 日本电产株式会社 | Linear actuator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112219357A (en) | 2018-06-12 | 2021-01-12 | 谷歌有限责任公司 | Unlicensed non-orthogonal multiple access transmission based on beamforming |
| EP3766201B1 (en) | 2018-06-15 | 2022-04-13 | Google LLC | Cbg-based noma transmission for a wireless network |
| US11063705B2 (en) | 2018-06-18 | 2021-07-13 | Google Llc | Methods and apparatus for HARQ in NOMA transmission for 5G NR |
| WO2019246429A1 (en) | 2018-06-22 | 2019-12-26 | Google Llc | Multi-branch noma wireless communication |
| US11910391B2 (en) | 2018-08-10 | 2024-02-20 | Google Llc | Methods and apparatus for an uplink control channel in NOMA asynchronous transmissions |
| CN112534949A (en) | 2018-09-26 | 2021-03-19 | 谷歌有限责任公司 | Non-orthogonal multiple access configuration in split base station architecture |
| JP2023173926A (en) * | 2022-05-27 | 2023-12-07 | ニデックインスツルメンツ株式会社 | actuator |
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| CN102684445A (en) * | 2011-03-07 | 2012-09-19 | 德昌电机(深圳)有限公司 | Electric cutting tool and driver of electric cutting tool |
| CN104638872A (en) * | 2013-11-11 | 2015-05-20 | 日本电产科宝株式会社 | Vibration actuator and mobile information terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5342516B2 (en) * | 2010-06-30 | 2013-11-13 | 日本電産コパル株式会社 | Vibration actuator |
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- 2016-06-30 WO PCT/JP2016/069557 patent/WO2017002950A1/en active Application Filing
- 2016-06-30 CN CN201680035761.8A patent/CN107710572B/en active Active
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| CN102684445A (en) * | 2011-03-07 | 2012-09-19 | 德昌电机(深圳)有限公司 | Electric cutting tool and driver of electric cutting tool |
| CN104638872A (en) * | 2013-11-11 | 2015-05-20 | 日本电产科宝株式会社 | Vibration actuator and mobile information terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114583914A (en) * | 2020-11-30 | 2022-06-03 | 日本电产株式会社 | Linear actuator |
| CN114583914B (en) * | 2020-11-30 | 2024-04-19 | 日本电产株式会社 | Linear actuator |
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| WO2017002950A1 (en) | 2017-01-05 |
| CN107710572B (en) | 2021-01-22 |
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